Gaya's 2021 population is now estimated at 575,652. In 1950, the population of Gaya was 131,585. Gaya has grown by 10,399 since 2015, which represents a 1.84% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects. These estimates represent the Urban agglomeration of Gaya, which typically includes Gaya's population in addition to adjacent suburban areas.